CIRCA: 2011
CASE MATERIAL: Platinum
CASE DIAMETER: 44 mm.
DIAL: Silver
MOVEMENT: Automatic
FUNCTIONS: Perpetual calendar, moon phases, power reserve,
BUCKLE: Platinum IWC deployant clasp
WITH: Operating instructions, presentation box and outer packaging.

This endangered species strap is shown for display purposes only and is not for sale. The watch will be supplied with a calf leather strap.

This lot is subject to standard Swiss VAT rules and 7.7% VAT will be charged on the ‘hammer’ and the ‘buyer’s premium’

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This lot is offered by Christie's International SA

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Lot Essay

The IWC Portuguese Perpetual Calendar 5023 was introduced in 2010, pairing IWC's self-winding 7-day movement with Kurt Klaus' ingenious perpetual calendar module. It featured a case of 44.2mm with sapphire glasses both front and back. One of its signature elements was the 'Single Moon' moon phase display, allowing its owner to read the moon phase in its hemisphere.

This reference, the IW5023-05 features a platinum case with a silver colored dial. It was introduced in 2011 and is limited to 250 pieces.